CVE-2026-34979
Received
Received - Intake
Heap-Based Buffer Overflow in OpenPrinting CUPS Scheduler
Publication date: 2026-04-03
Last updated on: 2026-04-16
Assigner: GitHub, Inc.
Description
Description
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| openprinting | cups | to 2.4.16 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a heap-based buffer overflow found in the CUPS scheduler component of OpenPrinting CUPS versions 2.4.16 and earlier. It occurs when the scheduler builds filter option strings from job attributes, potentially causing memory corruption.
How can this vulnerability impact me? :
The vulnerability can lead to a denial of service (DoS) condition due to the heap-based buffer overflow. According to the CVSS score, it does not impact confidentiality or integrity but can affect availability.
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